CN115622288A - Bilateral permanent magnet type multi-unit modularized arc permanent magnet synchronous motor - Google Patents
Bilateral permanent magnet type multi-unit modularized arc permanent magnet synchronous motor Download PDFInfo
- Publication number
- CN115622288A CN115622288A CN202211075669.8A CN202211075669A CN115622288A CN 115622288 A CN115622288 A CN 115622288A CN 202211075669 A CN202211075669 A CN 202211075669A CN 115622288 A CN115622288 A CN 115622288A
- Authority
- CN
- China
- Prior art keywords
- stator
- permanent magnet
- rotor
- teeth
- permanent magnets
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/17—Stator cores with permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2746—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets arranged with the same polarity, e.g. consequent pole type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention discloses a bilateral permanent magnet type multi-unit modularized arc permanent magnet synchronous motor which consists of a rotor and a stator; the rotor consists of a rotor back yoke, rotor teeth, a rotating shaft and a permanent magnet; the stator consists of three stator units, wherein each stator unit consists of a stator back yoke, stator teeth, split teeth, auxiliary teeth, an armature winding and a permanent magnet; the three stator units are symmetrically distributed outside the rotor along the circumference at 120 degrees. Permanent magnets are arranged on the sides of a stator II and a rotor I of the motor, and the magnetomotive force of the permanent magnets generated by the stator permanent magnets and the rotor permanent magnets is modulated by rotor teeth and stator teeth respectively, so that the bidirectional magnetic field modulation effect and the bidirectional magnetic field modulation effect effectively improve the components and the amplitude of air gap flux density harmonics, so that the bilateral permanent magnet type multi-unit modular arc permanent magnet synchronous motor disclosed by the invention has higher torque density, higher permanent magnet utilization rate and lower torque pulsation, and can be applied to low-speed and high-torque direct-drive occasions such as large-caliber astronomical telescopes.
Description
Technical Field
The invention belongs to the field of permanent magnet synchronous motors, and particularly relates to a bilateral permanent magnet type multi-unit modularized arc permanent magnet synchronous motor.
Background
Aiming at the traditional mode of the large-caliber astronomical telescope, the traditional driving mode is mostly an indirect driving mode of a rotating motor and a mechanical driving mechanism, and the traditional driving mode not only has the problems of complex structure and large volume, but also has the defects of friction, abrasion, elastic deformation, reverse clearance and the like, and is difficult to meet the performance requirements of low-speed large torque and high-precision tracking of the large-caliber astronomical telescope;
in order to solve the above problems, a direct drive method using an arc permanent magnet motor as a driving motor is proposed and successfully applied to driving of a large-caliber astronomical telescope, and domestic and foreign scholars have conducted intensive research on the arc permanent magnet motor, but the arc motor for the large-caliber astronomical telescope at present still has many scientific problems to be solved urgently, such as further improvement of motor torque density and permanent magnet utilization rate, further reduction of manufacturing cost, and the like.
Therefore, a bilateral permanent magnet type multi-unit modularized arc permanent magnet synchronous motor is provided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to disclose a bilateral permanent magnet type multi-unit modularized arc permanent magnet synchronous motor, which is used for improving the torque density and the permanent magnet utilization rate of the arc permanent magnet synchronous motor. The method comprises the following specific steps: on one hand, permanent magnets are arranged on two sides of a stator and a rotor of the motor and are bilateral permanent magnet type arc permanent magnet motors which can be regarded as superposition of stator permanent magnet type and rotor permanent magnet type arc permanent magnet motors and have the characteristic of bidirectional magnetic field modulation effect. The bidirectional magnetic field modulation effect improves the effective air gap flux density harmonic component and amplitude, and realizes the improvement of no-load back electromotive force and torque density; on the other hand, the stator/rotor permanent magnet of the motor adopts an N-iron array alternating pole structure, and compared with an N-S permanent magnet array, the N-iron array alternating pole structure reduces the permanent magnet consumption of the motor and improves the utilization rate of the permanent magnet on the premise that the arc permanent magnet motor keeps enough high torque performance. Therefore, the motor solves the problem that the motor torque density and the permanent magnet utilization rate are relatively low in the motor movement process in the prior art.
The purpose of the invention can be realized by the following technical scheme:
a bilateral permanent magnet type multi-unit modularized arc permanent magnet synchronous motor consists of a rotor and a stator; the rotor consists of a rotor back yoke, rotor teeth, a rotating shaft and a permanent magnet; the stator consists of three stator units, wherein each stator unit consists of a stator back yoke, stator teeth, split teeth, auxiliary teeth, an armature winding and a permanent magnet; the three stator units are symmetrically distributed outside the rotor along the circumference at 120 degrees.
As a further preferred scheme, the stator consists of three stator units, and the three stator units are symmetrically distributed outside the rotor along the circumference at 120 degrees; each stator unit and each rotor form a unit motor with 6 stator teeth/14 rotor tooth pole slots matched.
As a further preferable scheme, 6 armature windings on the stator unit are wound on 6 stator teeth in a non-overlapping concentrated winding form; armature windings are not arranged on 2 auxiliary teeth on two sides of the stator unit; the in-phase armature windings of the three stator units are connected in series to form a complete three-phase winding.
As a further preferable aspect, the stator back yoke, the stator teeth, the split teeth and the auxiliary teeth of the stator; and the rotor back yoke and the rotor teeth of the rotor are all formed by pressing silicon steel sheets with good magnetic conductivity.
As a further preferable scheme, the permanent magnets on both sides of the stator and the rotor have the same magnetizing direction and are both magnetized outwards in the radial direction (N pole); the two permanent magnets are made of neodymium iron boron with high magnetic energy product.
As a further preferable scheme, the split teeth and the permanent magnets on the stator teeth of each stator unit form an alternating pole structure array distributed in a 'split tooth-permanent magnet-split tooth-permanent magnet' manner.
As a further preferred scheme, 70 rotor teeth and 70 permanent magnets are uniformly distributed on the rotor, and the rotor teeth and the permanent magnets form an alternating pole structure array distributed in a rotor tooth-permanent magnet mode, and the array forms a rotor permanent magnet magnetic field with 70 pairs of poles on the whole circumference.
The beneficial effect of this disclosure:
permanent magnets are arranged on the sides of a stator II and a rotor I of the motor, and the magnetomotive force of the permanent magnets generated by the stator permanent magnets and the rotor permanent magnets is modulated by rotor teeth and stator teeth respectively, so that a bidirectional magnetic field modulation effect and a bidirectional magnetic field modulation effect are shown, and the composition and amplitude of air gap flux density harmonic waves are effectively improved, so that the bilateral permanent magnet type multi-unit modular arc permanent magnet synchronous motor disclosed by the invention has higher torque density, higher permanent magnet utilization rate and lower torque pulsation, and can be applied to low-speed and high-torque direct-drive occasions such as a large-caliber astronomical telescope; the no-load back electromotive force, the torque density and the permanent magnet utilization rate of the arc permanent magnet motor are improved.
Drawings
In order to more clearly illustrate the embodiments or prior art solutions of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic view of an overall structure of a motor of the present invention;
FIG. 2 is a schematic view of a rotor of the motor of the present invention;
FIG. 3 is a schematic view of a stator unit of the motor of the present invention; (ii) a
FIG. 4 is the no-load air gap flux density of the unit motor and its harmonic analysis when only the stator permanent magnet is excited;
FIG. 5 is the no-load air gap flux density and harmonic analysis of the unit motor when only the rotor permanent magnet is excited;
FIG. 6 is the no-load air gap flux density and harmonic analysis of the unit motor when the bilateral permanent magnet is excited;
FIG. 7 is an analysis of the no-load back emf and its harmonics for an arc permanent magnet motor when only the stator permanent magnets are excited;
FIG. 8 is an analysis of the no-load back emf and its harmonics for an arc permanent magnet motor when only the rotor permanent magnets are excited;
fig. 9 is an analysis of no-load back electromotive force and harmonic thereof of the arc permanent magnet motor when the bilateral permanent magnet is excited.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1, a bilateral permanent magnet type multi-unit modularized arc permanent magnet synchronous motor includes two parts, namely a rotor I and a stator II; the stator II consists of three stator units III, and the three stator units III are symmetrically distributed outside the rotor along the circumference at 120 degrees.
As shown in fig. 2, the rotor I is composed of four parts, namely, a rotor tooth 1, a rotor back yoke 2, a rotating shaft 3 and a permanent magnet 4, wherein the rotor tooth 1 and the rotor back yoke 2 are both formed by pressing silicon steel sheets with good magnetic conductivity, the rotating shaft 3 is made of non-magnetic stainless steel materials, and the permanent magnet 4 is a neodymium iron boron permanent magnet which is magnetized outwards in the radial direction;
further, 70 rotor teeth 1 and 70 rotor permanent magnets 4 are uniformly distributed on the whole rotor I, and the 70 rotor teeth 1 and the 70 rotor permanent magnets 4 form an alternating pole structure array distributed in a 'rotor teeth 1-rotor permanent magnets 4'. This kind of rotor structural design has the advantage of two aspects, and on the one hand, simple rotor tooth simple structure, robustness are good, and it has not only played the effect that the magnetic circuit switched on, plays the effect of magnetic field modulation to stator permanent magnetism magnetic field moreover. On the other hand, compared with an N-S permanent magnet array, the rotor tooth 1-rotor permanent magnet 4 array formed by alternately arranging 70 rotor teeth 1 and 70 rotor permanent magnets 4 reduces the use amount of the permanent magnets, improves the utilization rate of the rotor permanent magnets 4, and is particularly obvious on a large-caliber arc permanent magnet motor.
As shown in fig. 3, the stator unit III is composed of a stator back yoke 5, stator teeth 6, split teeth 7, a stator permanent magnet 8, auxiliary teeth 9 and an armature winding 10, and each stator unit III has 6 stator teeth 6 and 2 auxiliary teeth 9; each stator tooth top is split into 2 split teeth 7, thus each stator unit III has 12 split teeth 7; the split teeth 7 on each stator tooth 6 and the stator permanent magnets 8 are alternately arranged, and an array of 'split teeth 7-stator permanent magnets 8-split teeth 7-stator permanent magnets 8' is formed anticlockwise.
Further, an armature winding 10 is wound on each stator tooth 6, the winding is a non-overlapping concentrated winding, and compared with a distributed winding, the concentrated armature winding 10 has a shorter end length and a higher slot filling rate, so that the winding loss of the motor is effectively reduced, and the efficiency of the whole motor is improved.
Furthermore, the three stator units III are symmetrically distributed outside the rotor I along the circumference at 120 degrees, each stator unit III and the rotor form an arc permanent magnet unit motor with 6 stator teeth/14 rotor teeth, therefore, the motor can be regarded as being formed by three unit motors (namely, se:Sub>A unit motor I, se:Sub>A unit motor II and se:Sub>A unit motor III), the phase sequence of the winding of each unit motor is different, the phase sequence of the winding of the unit motor I is A-B-C-A-B-C, the phase sequence of the winding of the unit motor II is B-C-A-B-C-A, and the phase sequence of the winding of the unit motor III is C-A-B-C-A-B; finally, each phase winding of the three unit motors is connected in series to form a new phase winding. Through the design, the torque pulsation caused by the asymmetric effect of the three-phase winding of the motor can be well solved.
Fig. 4 shows the no-load air gap flux density waveform and its harmonic analysis generated by a unit motor of the motor when only the stator permanent magnet is excited. As can be seen from the figure, for a unit motor, the stator permanent magnet magnetomotive force generated by the 'split teeth 7-stator permanent magnets 8-split teeth 7-stator permanent magnets 8' array formed by the alternating arrangement of the 12 split teeth 7 and the 12 stator permanent magnets 8 on each stator unit has magnetic density harmonics of 2, 6, 12, 18 and 24 times under the modulation action of the 14 rotor teeth 1.
Fig. 5 is a no-load air gap flux density waveform generated by a unit motor of the motor when only the rotor permanent magnet is excited and a harmonic analysis thereof. It can be seen from the figure that for a unit motor, under the modulation action of 12 split teeth 7, the rotor permanent magnet magnetomotive force generated by a "rotor tooth 1-rotor permanent magnet 4" array formed by alternately arranging 14 rotor teeth 1 and 14 rotor permanent magnets 4 on a rotor has magnetic density harmonics of 2, 10, 14 and 22.
Fig. 6 shows the no-load air gap flux density waveform and its harmonic analysis generated by a unit motor of the motor when the double-sided permanent magnet is excited. It can be seen from the figure that the permanent magnet magnetomotive force generated by the permanent magnets of the stator II and the rotor I under the modulation of the rotor teeth 1 and the stator teeth 6 generates air gap magnetic fields with magnetic density harmonics of 2, 6, 10, 12, 14, 16, 18, 22 and 24 times at the same time. Therefore, the bilateral permanent magnet type arc permanent magnet motor can be regarded as the superposition of a stator permanent magnet type and a rotor permanent magnet type, and has the characteristic of bidirectional magnetic field modulation effect. The bidirectional magnetic field modulation effect effectively improves the components and the amplitude of air gap flux density harmonic waves.
Fig. 7-9 are respectively the no-load back electromotive force and harmonic analysis of the arc permanent magnet motor when only the stator permanent magnet, the rotor permanent magnet and the bilateral permanent magnet are excited. As can be seen from the figure, with the benefit of the bidirectional magnetic field modulation effect, compared with the no-load back electromotive force of the motor when only the stator permanent magnet and the rotor permanent magnet are excited, the no-load back electromotive force of the arc permanent magnet motor when the two-sided permanent magnet is excited is effectively improved, so that the torque density of the motor is further improved.
Furthermore, the stator permanent magnet 8 and the rotor permanent magnet 4 of the motor both adopt an N-iron array alternating pole structure, and compared with an N-S permanent magnet array, the N-iron array alternating pole structure enables the arc permanent magnet motor to effectively save the permanent magnet consumption of the motor and improve the permanent magnet utilization rate on the premise of keeping a sufficiently high torque performance.
Further, the technical scheme of the invention is also suitable for the outer rotor and inner stator multi-harmonic excitation type arc permanent magnet synchronous motor, and the above description is only a preferred embodiment of the disclosure.
Principle of operation
Permanent magnets are arranged on the sides of a stator II and a rotor I of the motor, and the permanent magnet magnetomotive force generated by a stator permanent magnet 8 and a rotor permanent magnet 4 is modulated by rotor teeth 1 and stator teeth 6 respectively, so that a bidirectional magnetic field modulation effect is shown. The bilateral permanent magnet type multi-unit modularized arc permanent magnet synchronous motor disclosed by the invention has higher torque density, higher permanent magnet utilization rate and lower torque pulsation, and can be applied to low-speed large-torque direct driving occasions such as large-aperture astronomical telescopes.
The foregoing description is only exemplary of the preferred embodiments of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (9)
1. The utility model provides a bilateral permanent magnet type polycell modularization pitch arc PMSM, includes rotor (I) and stator (II), its characterized in that, stator (II) include a plurality of stator unit (III), and stator unit (III) are along circumference evenly distributed on rotor (I), and stator unit (III) includes stator back yoke (5) and stator tooth (6), be equipped with a plurality of stator tooth (6) on stator back yoke (5), evenly be equipped with on stator tooth (6) and split tooth (7) and stator permanent magnet (8), the both sides of stator unit (III) are equipped with supplementary tooth (9).
2. The bilateral permanent magnet type multi-unit modularized arc permanent magnet synchronous motor according to claim 1, wherein the rotor (I) comprises rotor teeth (1), a rotor back yoke (2), a rotating shaft (3) and rotor permanent magnets (4), the rotor back yoke (2) is arranged on the rotating shaft (3), a plurality of rotor teeth (1) and a plurality of rotor permanent magnets (4) are uniformly distributed on the rotor back yoke (2), the magnetizing direction of the rotor permanent magnets (4) is consistent with the magnetizing direction of the stator permanent magnets (8) on the stator, and the rotor teeth (1) and the rotor permanent magnets (4) form an alternating pole structure array distributed from "rotor teeth (1)" to "rotor permanent magnets (4)".
3. A double-sided permanent magnet type multi-unit modular arc permanent magnet synchronous machine according to claim 2, characterized in that 70 rotor teeth (1) and 70 rotor permanent magnets (4) are evenly distributed on the rotor (I).
4. A bilateral permanent magnet type multi-unit modular arc permanent magnet synchronous machine according to claim 1, wherein the stator (II) is composed of three stator units (III) symmetrically distributed at 120 degrees along the circumference outside the rotor (I).
5. A permanent magnet synchronous machine according to claim 1, wherein the stator teeth (6) are provided with armature windings (10), and the armature windings (10) are wound around the stator teeth (6) in a non-overlapping concentrated winding.
6. A permanent magnet synchronous machine of the bilateral permanent magnet type multi-unit modular arc type according to claim 1, characterized in that each stator unit (III) is provided with 6 stator teeth (6) and 2 auxiliary teeth (9), wherein each stator tooth (6) is provided with 2 split teeth (7).
7. The bilateral permanent magnet type multi-unit modular arc permanent magnet synchronous motor according to claim 1, wherein split teeth (7) on each stator tooth (6) and stator permanent magnets (8) are alternately arranged to form an array of split teeth (7) -stator permanent magnets (8) -split teeth (7) -stator permanent magnets (8), in the array of split teeth (7) -stator permanent magnets (8) -split teeth (7) -stator permanent magnets (8) formed by the split teeth (7) and the stator permanent magnets (8), the stator permanent magnets (8) are radially magnetized, and the height and the arc length of the stator permanent magnets on each stator unit (III) are equal.
8. A double sided permanent magnet type multiple unit modular arc permanent magnet synchronous machine according to claim 1, characterized in that each stator unit (III) has a total of 12 permanent magnets (8).
9. A permanent magnet multi-unit modular arc permanent magnet synchronous machine according to claim 5, characterized in that the in-phase armature windings of three stator units (III) are connected in series to form a complete three-phase winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211075669.8A CN115622288A (en) | 2022-09-01 | 2022-09-01 | Bilateral permanent magnet type multi-unit modularized arc permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211075669.8A CN115622288A (en) | 2022-09-01 | 2022-09-01 | Bilateral permanent magnet type multi-unit modularized arc permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115622288A true CN115622288A (en) | 2023-01-17 |
Family
ID=84859438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211075669.8A Pending CN115622288A (en) | 2022-09-01 | 2022-09-01 | Bilateral permanent magnet type multi-unit modularized arc permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115622288A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116205113A (en) * | 2023-04-18 | 2023-06-02 | 合肥工业大学 | Robustness optimization method and system for permanent magnet synchronous linear motor |
| CN116388499B (en) * | 2023-05-26 | 2023-08-11 | 山东科技大学 | Stator modularized bilateral permanent magnet excitation type magnetic field modulation wind driven generator |
-
2022
- 2022-09-01 CN CN202211075669.8A patent/CN115622288A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116205113A (en) * | 2023-04-18 | 2023-06-02 | 合肥工业大学 | Robustness optimization method and system for permanent magnet synchronous linear motor |
| CN116388499B (en) * | 2023-05-26 | 2023-08-11 | 山东科技大学 | Stator modularized bilateral permanent magnet excitation type magnetic field modulation wind driven generator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115622288A (en) | Bilateral permanent magnet type multi-unit modularized arc permanent magnet synchronous motor | |
| CN102412700B (en) | Low-speed high-thrust-density linear motor | |
| CN101651395B (en) | Sine wave current self-starting three-phase rare earth permanent-magnetism synchronous motor | |
| CN101662198A (en) | Stator surface mounted doubly salient pole permanent magnet motor | |
| CN111313576B (en) | Modularized permanent magnet motor | |
| CN111082548A (en) | Stator modular hybrid excitation alternating pole magnetic flux reverse motor | |
| CN110212722A (en) | A kind of oblique pole double freedom permanent magnet generator of direct-drive type power generation with marine energy bimorph transducer | |
| CN115765235A (en) | Double-stator magnetic field modulation arc permanent magnet direct drive motor | |
| CN104836398A (en) | Rotor magnetic concentrating double-stator transverse magnetic field permanent magnet synchronous motor | |
| CN107579637A (en) | A kind of axial radial flux magneto | |
| CN113949244B (en) | Single-tooth concentrated winding few-harmonic axial flux motor | |
| CN111262358A (en) | Low-torque ripple magnetic flux reverse motor | |
| CN201478970U (en) | Permanent magnet motor suitable for high-speed operation | |
| CN113489184A (en) | Magnetic gear composite motor with single-layer air gap | |
| CN111555492B (en) | Parallel-magnetizing small-rare-earth-combination local Halbach array high-speed permanent magnet motor | |
| CN201478968U (en) | Sine current self-starting three-phase rare-earth permanent-magnet synchronous motor | |
| CN201563010U (en) | Permanent magnet motor suitable for constant power flat speed controlling running stator | |
| CN114006489B (en) | Direct-drive alternating-pole permanent magnet hub motor | |
| CN113595281B (en) | High-torque-density composite permanent magnet motor | |
| CN213602464U (en) | High-efficiency Halbach array permanent magnet synchronous motor | |
| CN113517797A (en) | Mixed stator pole stator permanent magnet motor | |
| CN112688528B (en) | Multi-harmonic excitation type arc permanent magnet synchronous motor | |
| CN113629967A (en) | Direct-current brushless inner rotor motor with Halbach array | |
| CN112350480A (en) | High-efficiency Halbach array permanent magnet synchronous motor | |
| CN115632534B (en) | Direct-drive type bilateral permanent magnet excitation type magnetic field modulation motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |